Tube-cleaning apparatus.



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TUBE CLEANING APPARATUS.

APPLICATION mz o APR.5.1912.

1,147,237. Y A Patnted July 20,1915.

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ELMER E. HAUER, or SPRINGFIELD, orrro, ASSIGNOR 'ro THE LAGQN DA MAnUFAc- TUBING COMPANY, or SPRINGFIELD, 01110, A CORPORATION or OHIO.

TUBE-CLEANING APPARATUS.

Application filed April 5, 1912 Serial No. 688,698. 4

To all whom it may concern:

Be it known that I, ELMER E. HAUER, a

I citizen of the United States, residing-at Springfield, in the county'of Clark and State of Ohio, have invented certain new and useful Improvements in Tube-Cleaning Apparatus, of which the following is a specification, reference being had therein to the accompanying drawings.

My inventionrelates to tube cleaning apparatus.

The object of my invention is to provide an improved and more eflicient cleaning device in which a reciprocating tool is carried by a rotating body creasing, the tool and the body or casing each being given their respective movements by the direct and positive action of the motive agent. 1

A further object is to adapt the device for operation within the tube and to provide means for centering it within the tube to give clearanceifor the action of the reciprocating tool.

With these and other objects in view my invention consists of the constructions and combinations hereinafter described and set forth in the claims In the accompanying drawings which form a part of this specification Figure 1 is a longitudinal section of a cleaning apparatus embodying my invention, taken :on the line 1-1 of Fig. 2. Fig. 2, is a crosssection on the line 2-2 of Fig. 5. Fig. 3 is a cross-section on line 83 of Fig. 1. Fig. 4 is a cross-section on line 4-4 of Fig. 5. Fig. 5 is a longitudinal section on line 55of Fig. 2. Fig. 6 is a cross-section on line 6-6 of Fig. 1. Fig. 7 is a cross-section on line 7-7 of Fig. 1. Fig. 8 is a cross-section on line 88 of Fig. land Fig. 9 is a cross section on line 99 of Fig. 1.

Like numerals represent the same parts in the several views.

In the drawings 1 represents a stationary shaft having an enlarged portion 2 provided with slots in which blades 3. are seated. A cylinder 4 forms a chamber of such dimensions that whenthe enlarged portion 2 of the shaft is mounted therein it will contact with the walls of the chamber in two places opposite each other forming two oppositely disposed crescent shaped chambersas particularly shown in Fig. 2. A two-part casing 5 is screw-threaded over the cylinder against an abutment 6 on said cylinder and Specification of Letters Patent.

Patent d July 20, 1915.

the front end of said'casing is provided with a forwardly projecting head 7 having a transverse bore 8 in which a piston hammer 9 reciprocates. The rearportion of said cas- 1 ing has a rearwardly extending head 10 in which a'bearing member 11 is seated and said bearing member is secured by dowel-pin 11 to the cylinder. The stationary shaft 1 extends beyond the heads 7 and 10 and is provided with supports or carriers 12 screwthreaded thereto as shown. Said supports 'or carriers have radial bores with studs 13.

seated therein and pressed outwardly by springs 14 to center theidevice within a tube and give clearance forthe operation of the piston hammer. 'Pins 15 engaging shoulders formed by slots in the studs asparticularly shown in Fig. 9 retain the studs in place and the slots allow for the necessary play of the studs. The rear support or carrier-has a forwardly projecting portion 16'into which a reduced portion of the rear head projects as shown in Figs. 1 and 5. Bushings 17, 18 and 19 are provided vso that they can be readily removed in case of wear.

The stationary shaftextends beyond the rear support or carrier and is screw-threaded to attach a conduit to supplythe motive agent to a longitudinally extending conduit 20 in said shaft. Branch conduits 21 open into an annular groove 22 in the shaft, through which the motive agent passes into radial conduits 23 in the bearing member and its bushing and thence by inlet ports 2 1 into the crescent shaped working chambers. The blades 3 are held outwardly against the walls of the working chambers by the pressure of the motive agent through ports 25 j and said blades form abutments so that the with its casing and heads to rotate, the exf haust passing through exhaust ports 25 extending through a plate 26 and the head 7 to the atmosphere. Said plate 26 isseated in the head 7 and secured against rotation to Y the cylinder Aby a dowel-pin 26 asparticularly shown in Figs. 1, land 5.

The piston hammer 9 operating in the bore 8 is provided with an elongatedopening 27 through which the stationary shaft 1 and bushing 19 extend. Ports 28 from the inlet conduit in the shaft are adapted to register with ports 29 through the bushing 19 to admit the motive agent to reciprocate the.

piston hammer and the motive agent is discharged through exhaust ports 30 in the bushing 19, said exhaust ports being adapted to register with ports 31 opening to a discharge conduit 32 in the shaft. Auxiliary exhaust ports 33 extending from the bore 8 and opening to the atmosphere in front of the head 7 are provided to relieve the pressure the instant the hammer strikes the tube as particularly shown in Fig. 1. The ports 33 are covered and uncovered by the heads of the reciprocating piston hammer.

To give the rotary casing or head that carries the piston hammer a uniform speed under varying pressures, blocks 34 are seated in radial openings in the head 10 and pressed outwardly against the projection 16 of the rear carrier by the pressure of the motive agent admitted to the rear of said blocks through openings 36 in the bushing 17, supplied through branch conduits 37 and groove 38 in the shaft. that by employing the blocks 34: of such proportions in their contact with the projection 16 the friction caused thereby will vary in accordance with the varying pressures of the motive agent and a uniform speed will be maintained.

Having thus described my invention I claim 1. In a tube cleaning apparatus, a stationary shaft having a supply conduit for the motive agent, a casing mounted to rotate on said shaft and having a transverse bore therethrough, a piston tool in said bore with means to admit the motive agent. thereto from said supply conduit to reciprocate said piston tool to deliver hammer blows beyondthe respective ends of and in line with said bore, substantially as described.

2. In a tube cleaning apparatus, a stationary shaft having a supply conduit for the motive agent, a casing mounted to rotate on said shaft and having a transverse bore therethrough, a piston tool in said bore having an opening through which said shaft extends and means to admit the motive agent thereto from said supply conduit to reciprocate said piston tool to deliver hammer blows beyond the respective ends of and in line with said bore, substantially as described.

3. In a tube cleaning apparatus, a stationary shaft having a supply conduit with ports, a casing having a bushing mounted to rotate on said shaft and having a transverse bore therethrough, a piston tool in said bore having an opening through which said shaft and bushing extend, said bushing having ports adapted to register with the ports in said shaft admitting the motive agent to reciprocate said piston tool to deliver hammer blows beyond the respective ends of and The arrangement is such in line with said bore, substantially as described.

4. In a tube cleaning apparatus, a stationary shaft having supply and exhaust ports, a casing having a bushing mounted to rotate on said shaft and having a transverse bore therethrough, a piston tool in said bore having an opening through which said shaft and bushing extend, said bushing having ports adapted to register with the ports in said shaft to admit and discharge the motive agent to reciprocate said piston tool to de liver hammer blows beyond the respective ends of and in line with said bore, substantially as described.

5. In a tube cleaning apparatus, a stationary shaft having supply and exhaust ports, a ca sing with a head and a bushing mounted to rotate on said shaft and having a transverse bore therethrough, a piston tool in said bore having an opening through which said shaft and bushing extend, said bushing having ports adapted to register with the ports in said shaft to admit and discharge the motive agent to reciprocate said piston tool to deliver hammer blows beyond the respective ends of and in line with said bore, said head having auxiliary exhaust ports, substantially as described.

6. In a tube cleaning apparatus, a stationary shaft, a casing mounted on said shaft, means within said casing to rotate said casing, said casing having a transverse bore therethrough, a reciprocating piston tool in said bore adapted to deliver hammer blows beyond the respective ends of and in line with said bore and said shaft having a supply conduit with ports to supply the motive agent to said rotating means and to said reciprocating piston, substantially as described.

7. In a tube cleaning apparatus, a station ary shaft, a casing mounted on said shaft, means within said casing to rotate said casing and means to govern said rotation and give said casing a uniform speed under variations of pressure of the motive agent, said casing having a transverse bore therethrough, a reciprocating piston tool in said bore adapted to'deliver hammer blows beyond the respective'ends of and in line with said bore, said shaft having a supply conduit with ports to supply the motive agent to said reciprocating piston and to said rotating and governing means, substantially as described.

In testimony whereof I have hereunto affixed my signature in the presence of two witnesses.

' ELMER E. HAUER.

Witnesses:

OLIVER I-I. HOUSE, VIRGIL BAKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

